An Index of Species Abundance for Use with Mosquito Surveillance Data 12

Sandflies (Diptera: Psychodidae) in rural and urban environments in an endemic area of cutaneous leishmaniasis in southern Brazil

“…Statistical analysis -The numerical abundance according to the spatial distribution of sandfly species was calculated based on the Standardized Index of Species Abundance (SISA) (Roberts & Hsi 1979) and the values that are closest to 1.0 represent the most abundant species. The index was calculated for all the species collected using the CDC traps in rural localities.…”

Study of sand fly fauna in an endemic area of American cutaneous leishmaniasis and canine visceral leishmaniasis in the municipality of Espírito Santo do Pinhal, São Paulo, Brazil

“…The estimates of evenness were obtained using Pielou's index (Magurran 1988). The standardised index of species abundance (SISA) was calculated according to Roberts and Hsi (1979) and the species constancy was calculated by the constancy coefficient (Dajoz 1973). For the most abundant species, the monthly distribution was analysed relative to the 10 d soil water balance (Thornthwaite & Mather 1955).…”

Epidemiological study on leishmaniasis in an area of environmental tourism and ecotourism, State of Mato Grosso do Sul, 2006-2007

“…Selected Blocks (30%) To determine the abundance of a certain species in relation to others, at a given time and location, the Roberts and Hsi standard abundance index (SAI) was used 21 . The Williams Geometric Average 9 was used to quantify the frequency and regularity of the most abundant species.…”